<template>

<div class="login">
    <el-form ref="form" :model="form" class="container" :rules="rules">
      <el-form-item>
        <div class="avatar">
          <img src="../assets/avatar.jpg" alt="">
        </div>
      </el-form-item>
      <el-form-item prop="username">
        <el-input v-model="form.username" placeholder="账户" prefix-icon="myicon myicon-user"></el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input v-model="form.password" placeholder="密码" prefix-icon="myicon myicon-key" type="password" @keydown.native.enter="loginSubmit('form')"></el-input>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" class="login-btn" @click="loginSubmit('form')">登录</el-button>
      </el-form-item>
    </el-form>
  </div>

</template>

<script>
import { checkUser } from "@/api";

export default {
 data () {
    return {
      form: {
        username: '',
        password: ''
      },
      rules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {

    loginSubmit(formName) {
      //检验表单
       this.$refs[formName].validate(valide => {
        //只有检验通过，才执行函数
        if (valide) {
          checkUser(this.form).then(res => {
              console.log(res)
            //如果成功要跳转到首页， 将token 保存到到localStorage,将username保存到vuex的state中
             if (res.meta.status === 200) {
               localStorage.setItem('mytoken',res.data.token)//第一次请求响应回来的token（通过特俗算法）
               //保存在localStorage中,下一次请求的时候 通过axios 把token值装进 请求头(request)中 让服务器验证

             // this.$store.commit('setUsername', res.data.username)
              this.$router.push({name: 'Home'})
            } else {
              //如果失败，展示提示信息
                this.$message({
                type: 'error',
                message:res.meta.msg
              });
            }
          });
        } else {
          console.log("校验不通过");
        }
      });
    }
  }
}
</script>

<style lang="scss" scoped>
.login {
  position: fixed;
  width: 100%;
  height: 100%;
  background-color: #2f4050;

  .container {
    position: absolute;
    left: 0;
    right: 0;
    width: 400px;
    padding: 0px 40px 15px 40px;
    margin: 200px auto;
    background: white;
    .avatar {
      position: relative;
      left: 50%;
      width: 120px;
      height: 120px;
      margin-left: -60px;
      margin-top: -60px;
      box-sizing: border-box;
      border-radius: 50%;
      border: 10px solid #fff;
      box-shadow: 0 1px 5px #ccc;
      overflow: hidden;
    }
    .login-btn {
      width: 100%;
    }
  }
}
</style>
